What are the rules for replacing tennis balls?
The tennis ball used in the game is yellow and made of rubber compound. The outer surface is evenly covered with wool fibers, and there are no stitches at the seams. The diameter of the ball is 6.35-6.67 cm, and the weight is 56.7-58.5 grams.
1. 7-9 balls are used on the tennis court. According to the rules of the game organizer.
2. The replacement of the new ball is generally in the 7th and 9th innings. If a new ball is not changed in the specified number of rounds, the error shall wait until the turn and the player who serves the new ball to change the ball. Or in doubles, the pair of athletes should be corrected when their next round of service comes and replaced with a new ball. After that, new balls shall be replaced according to the number of rounds originally stipulated in the time of two ball changes. When a new ball is replaced, the deciding game is counted as one game. If a new ball is replaced in the game, it will be replaced when the next set begins.
3. The ball is lost or wet in the game. If it is a warm-up or the match is within two rounds, a new ball will be exchanged. After two rounds, a similar old ball is replaced, and the game should be played continuously during the ball change.
4. In the case of suspension or suspension of the game for some reason. Do not use the original game ball when performing warm-up activities. The original game ball is used again at the start of the game.
